Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
060025goodexcellent91excellent
050031goodexcellent81excellent
040031goodexcellent81excellent
030043goodexcellent81excellent
020042goodexcellent91excellent
010042goodexcellent111excellent
000041goodexcellent101excellent
230045goodexcellent91excellent
220039goodexcellent81excellent
210036goodexcellent71excellent
200029goodexcellent71excellent
190025goodexcellent81excellent
180026goodexcellent81excellent
170024goodexcellent61excellent
160035goodexcellent61excellent
150035goodexcellent81excellent
140030goodexcellent91excellent
130040goodexcellent71excellent
120042goodexcellent71excellent
110051goodexcellent61excellent
100034goodexcellent51excellent
090025goodexcellent51excellent
080023goodexcellent41excellent
070020excellentexcellent41excellent